Spinning or twisting ring



Feb. 22, 1966 Filed NOV. 6, 1962 A. GISINGER SPINNING OR TWIS'IING RING2 Sheets-Sheet l Fig. 1

4 3 41," "w 2 5 HI i it 5% a 5 m Fig. 2

'MWW United States Patent 3,236,040 SPINNING 0R TWISTING RING AntonGisinger, Stotten am Auerberg, Allgaeu, Germany, assignor to SchwabischeFormdrehteile G.rn.b.H., Bahenhausen, Germany Filed Nov. 6, 1962, Ser.No. 235,819 2 Claims. (Cl. 57-119) This invention relates in general tospinning or twisting ring construction and in particular to a new anduseful spinning or twisting ring made of a single sheet of metal whichis generally T-shaped in section with a flange portion formed of twocrank legs to form an opening therebetween for cooling purposes.

Prior to the present invention, spinning or twisting rings made of steelsheet materials in single or multiple pieces have been known. When suchrings are made in one piece, they include a receiving cylinder which isvery diflicult to produce for attachment of a ring to a ring bench. Whenthey are made in multiple pieces, they consist, for example, of upperand lower portions which must be detachably connected together. Inconstructions of this type, only the upper portion or portions are madeof sheet steel which rests on a massive lower portion. Both types ofspinning rings have the disadvantage that the ring web is interrupted atits inner surface by the form of the receiving cylinder or by a jointbetween the upper and lower portion. The result of this is that loosethread particles settle on the inner side of the ring which, whendetached later, coil into the spun thread, reducing the quality thereof.

Some of the known spinning or twisting rings of this kind consist ofseveral layers of sheet metal at the ring web or at the ring flange.Other rings have a ring flange which is designed as a closed cavity andserves as an oil chamber. All of these designs make the manufacturecomplicated and expensive. In spinning rings formed of several layers ofsheet material, an additional factor is that the web and the flangethickness must not exceed a certain limit when the rings are small. Insuch cases, very thin sheets are required and this further complicatesthe manufacture, and particularly so in respect to the hardening of thering.

A general disadvantage of known spinning rings and twisting rings alsoresides in that, due to the high running speed of the ring traveler, thetemperature at the inner edge of the ring flange and in the traveler isgreatly increased. As a result of this, the wear of the ring and thetraveler is accelerated and, in addition, the number of thread rupturesis increased.

In accordance with the present invention, there is provided a spinningor twisting ring which is easy and inexpensive to manufacture and whichcomprises a ring web as well as a ring flange which is made of a singlepiece of a single layer of steel sheet. The ring web is made with aninterior which is smooth and which terminates at its upper end in a ringflange formed of two crank legs, one turned inwardly toward the centerof the ring and another turned outwardly, forming therebetween on theopposite side of the curved interior face an opening which provides acooling effect. This construction also permits very simple manufactureby a deep-drawing process, since excessive heating of the ring flange isavoided and a quick cooling effect is produced on the open side of theflange.

A further advantage in the construction is that the flange is such thatit will easily receive supporting rings at the exterior face and variousrings may be coordinated with various supporting ring structures.

A further advantage is that the open side of the flange portion permitsthe easy application and removal of the ring traveler around the flangeportion without any deformation of the traveler. In addition, themovement of the traveler around the ring induces a cooling aircirculation within the flange and thereby extends the life thereof.

An object of the invention is to provide a ring construction forspinning or twisting machines.

A further object of the invention is to provide a ring construction fora spinning or twisting machine which is formed of a single sheet ofmetal with a flange portion formed in a substantially U-shaped manner,with a curved portion extending inwardly toward the center of the ringand with the leg portions diverging outwardly on the opposite side toform an opening therebetween.

A further object of the invention is to provide a ring construction fora spinning machine and the like which comprises a single sheet of steelmaterial which is formed into a ring with the inner web portion beingsubstantially smooth and with an upper flange portion formed with twocrank leg portions extending in opposite direction and defining a curvedportion facing the interior of the ring, and an open portion on theexterior, and including a supporting ring embracing the outer side ofthe ring adjacent the lower end thereof.

A further object of the invention is to provide a ring structure forspinning machines which is simple in design, rugged in construction andeconomical to manufacture.

The various features of novelty which characterize the invention arepointed out with particularity in the claims annexed to and forming apart of this specification. For a better understanding of the invention,its operating advantages and specific objects attained by its use,reference should be had to the accompanying drawings and descriptivematter in which there are illustrated and described preferredembodiments of the invention.

In the drawings:

FIG. 1 is a section through a spinning ring constructed in accordancewith the invention;

FIG. 2 is an enlarged fragmentary sectional view of the flange portionof the ring indicated in FIG. 1;

FIG. 3 is a view similar to FIG. 2, but indicating the manner in which atraveler is installed over the flange portion of the ring; and

FIG. 4 is an enlarged sectional view of the flange por tion of anotherembodiment of the ring.

Referring to the drawings in particular, the invention embodied thereinincludes a ring generally designated 1 which is made of deep-drawablesteel sheet material and is provided with a cylindrical ring land or webportion 2 having a continuous smooth inner surface extending from thelower end of the ring up to a flange generally designated 3 which isformed at the upper end thereof.

In accordance with the invention, the ring flange 3 is formed as anintegral portion of the Web 2 and the overall ring has a generallyT-shaped cross-section. The flange 3 is made so that it opens at theouter end and it is provided with a rounded inner edge 4 which faces thecenter of the ring.

As indicated more clearly in FIG. 2, the flange 3 in- J cludes asubstantially U-shaped formation which comprises a crank leg portion 6extending in an inward direction, and a crank leg portion 7 extending inan out- 1 ward direction in respect to the center of the ring. The crankportions 6 and 7 are connected by the curved portion 4. The top 30 ofthe crank leg portion 7 is advantageously made substantially flat toformthe roof of the ring member. The two crank legs 6 and 7 form anopening 8 therebetween through which air circulates, so that a naturalcooling etfect is exerted on the ring 3 and excessive heating of theflange and the spinning traveler to be associated therewith is avoided.

As indicated in FIG. 3, it is a simple matter to apply the ring traveler9 onto the flange 3 without any danger of causing deformation of theflange. The usual ring traveler 9 having leg portions 9a and 9b whichare separated by the distance indicated in FIG. 3, may be easilyinserted around the flange without danger of deformation of thetraveler. This is so because the end 9a may enter easily into the space8. At the most, only a slight further widening of the traveler 9 isnecessary, and this can easily be accomplished since the traveler ismade of elastic material and will expand without any permanentdeformation. Therefore, the outside of the flange can be lengthened ascompared to the usual profile according to DIN (German IndustrialStandards) 64000 without resulting in difliculties when mounting thetravelers.

An important feature is that the crank leg 7 is lengthened to furnish alarger surface of the roof of the flange profile acting as a coolingfin, and also to increase the cooling effect of the air gap 8. Thecooling of the flange 3 by this process during the operation of thetraveler 9 has, as a matter of fact, proved to be extremely important.Until the present time it was assumed that the hardness of the contactsurfaces of the ring and the traveler alone determined the life of theapparatus. Experiments have shown, with the flange profile according tothe present invention, that a long life is obtained and also with a muchlower material hardness due to the excellent cooling which is present.This is true because there is no longer an annealing action of thetraveler and abrasion of the annealed traveler on the ring as in priorart constructions, but instead the traveler material retains its initialhardness, even at high running speeds.

In the embodiment indicated in FIGS. 1 to 3, the roof 30 issubstantially flat but is slightly inclined from the horizontaldownwardly from the center of the ring outwardly. This constructioninsures that at strong thread tension the traveler will be pulledinwardly to the extent that its end will abut on the inside of the web 2so as to disturb the steady running of the traveler. An angle ofinclination of the roof 30 of 745 has proved particularly advantageous.

The supporting ring 10, with an outside diameter adapted to thereceiving bore of the ring 1, is arranged adjacent the lower end of theweb 2. The supporting ring 10 is preferably made of a plastic and it isfastened on the spinning ring 1 by pressing or gluing or by extrusionclodding. For a better hold on the ring 1, the ring web 2 may, duringextrusion, be roughened at the exterior by providing, for example,corrugations, depressions, notches and the like.

With a construction as described above, it is possible to selectivelyassign a supporting ring of a chosen diameter to accommodate theparticular, spinning ring size. This permits the production cost to belessened, since a ring type produced with one drawing tube can be usedfor different ring bench sets. In addition, the described spinning ringconstruction weighs considerably less than spinning rings made entirelyor partly of massive material, and due to this the ring bench whichsupports a plurality of rings is lighter, so that a smaller moment ofinertia must be overcome to drive it.v

In FIG. 4, another embodiment of the invention is indicated whichincludes a ring generally designated 11 i which includes a Web 12 with acrank leg portion 13 extending inwardly therefrom, and a crank legportion 14 extending outwardly from the leg portion 13. The innersurface of the flange portion generally designated 32 is curved todefine an inner curved edge 15. The crank legs 13 and 14 define betweenthem an interior space or cooling air gap 17 for the flow of cooling airtherethrough. The upper portion or roof 34 of the leg 14 extends in anarc slanting downwardly toward the outside of the ring. The length ofthe roof 34 is such that a traveler generally designated 16 does nottouch the end of the roof in normal running. The effect of thisarrangement is that during operation the traveler 16 moves so that theouter end 18 adjacent the mouth 20 of the gap 17 produces an airwhirling which penetrates into the interior of the gap and sucks out theheated air present therein and also supplies fresh cooling air. Thecooling air reaches the wall 19 at the interior of the gap 17 and servesto prevent excessive heating of the traveler 16 and of the flange edge15, resulting in a considerable lengthening of the life of the ring andthe traveler.

The process of cooling the ring 11 and the traveler 16 by the coolingair flow is assisted in particular by the fact that there is only asmall distance between the free end of the roof 34 and the traveler 16,so that the escape of the air stream produced by the end of the travelerin a direction upwardly into the free zone is hindered. The air insteadis forced into the interior of the gap by the inner surface of the roof14.

In some instances, the roof 14 is arranged to extend substantiallyhorizontally to define a fiat roof and then is provided with aninclinded or vertical crank portion which extends downwardly from theflat roof portion. An important consideration in the construction isthat the mouth 20 of the cooling air gap 17 should be located above theouter end of the traveler 16 when the latter is in the operative stage,and that in this stage the end of the roof 14 should extend close to theorbit of the traveler above the outer end thereof.

While specific embodiments of the invention have been shown anddescribed in detail to illustrate the application of the principles ofthe invention, it will be understood that the invention may be embodiedotherwise without departing from such principles.

What is claimed is:

1. A spinning or twining ring made of a single layer of steel platehaving a ring land designed as a substantially smooth vertical cylinderwith a first wall portion bent oil at the upper end of the ring landtoward the ring center, a second wall portion bent off at the outside ofthe ring from said first wall portion, said ring land with said firstand second wall portions defining a T- shaped ring flange guiding thetraveler, said first and second wall enclosing a gap open to the outsideof the ring which permits access of cooling air in the flange up to anedge of the ring flange opposite the guiding edge of the traveler, saidfirst and second wall portions being connected by a rounded transitionforming the guiding edge of the traveler which is substantially arcuateand extends up to the vicinity of the path of motion of the outertraveler part.

2. A spinning or twining ring for a traveler made of a single layer ofsteel plate having a ring land designed as a vertical and substantiallysmooth cylinder, a first flange wall bent off at the upper end of thering land toward the ring center, and a second flange wall connected.with the first flange wall over a round transition forming the guidingedge of the traveler which transition extends from the topmost edge ofthe ring downwardlysubstantially in a circular are, said second flangeWall being spaced from said first flange wall to form an exterior openmouth arranged on the outside of the ring, said ring land beingsubstantially cylindrical P to its bottom end where it is cut OE andembraced'by 5 a supporting ring adapted to the ring holder whose bottomedge is flush with the said bottom edge of the ring land.

References Cited by the Examiner UNITED STATES PATENTS 5 1,265,924 5/1918 Lanning 571 19 1,351,595 8/1920 White 571 19 3,056,250 10/1962Backus 57119 MERVIN STEIN, Primary Examiner.

RUSSELL C. MADER, DONALD W. PARKER,

Examiners.

1. A SPINNING OR TWINING RING MADE OF A SINGLE LAYER OF STEEL PLATEHAVING A RING LAND DESIGNED AS A SUBSTANTIALLY SMOOTH VERTICAL CYLINDERWITH A FIRST WALL PORTION BENT OFF AT THE UPPER END OF THE RING LANDTOWARD THE RING CENTER, A SECOND WALL PORTION BENT OFF AT THE OUTSIDE OFTHE RING FROM SAID FIRST WALL PORTION, SAID RING LAND WITHN SAID FIRSTAND SECOND WALL PORTION DEFINING A TSHAPED RING FLANGE GUIDING THETRAVELER, SAID FIRST AND SECOND WALL ENCLOSING A GAP OPEN TO THE OUTSIDEOF THE RING WHICH PERMITS ACCESS OF COUPLING AIR IN THE FLANGE UP TO ANEDGE OF THE RING FLANGE OPPOSITE THE GUIDING EDGE OF THE TRAVELER, SAIDFIRST AND SECOND WALL PORTIONS BEING CONNECTED BY A ROUNDED TRANSITIONFORMING THE GUIDING EDGE OF THE TRAVELER WHICH IS SUBSTANNTIALLY ARCUATEAND EXTENDS UP TO THE VICINITY OF THE PATH OF MOTION OF THE OUTERTRAVELER PART.